Restrictions have recently tightened further because of new variants.

由于病毒出现了新的变，最近进步收紧。

They've released almost 700 new plant variations since 1927.

自1927年以来，他们已经布了近七百个新的植物变。

A US scientist says vaccinations and precautions can help stop the rise of new COVID-19 cases driven by new variants.

名美国科学家表示，接种疫苗和预防措施可以帮助阻止新冠肺炎新变病例的增长。

COVID-19 hospital admission and death rates are going up, and new omicron variants are being blamed.

新冠肺炎的入院率和死亡率都在上升，新的奥密戎变被认为是始作俑者。

There is growing concern in the U. S. over a spike in COVID-19 infections tied to a new Omicron variant.

在美国，人们对与新奥密戎变有关的新冠病毒感染病例激增关注加大。

Possibly, unle-ss vaccine makers can develop new booster shots that target Omicron's subvariants.

刘易斯：有可能，除非疫苗造商能够出针对 Omicron 亚变的新加强针。

Russia says it's started developing a new version of the Sputnik vaccine adapted to the new COVID-19 Omicron variant.

俄罗斯表示，已始种适应新冠病毒新变 Omicron 的新版 Sputnik 疫苗。

The World Health Organization is seeking a global treaty between nations on responding to pandemics amid growing concerns over the new COVID-19 Omicron.

在人们对新冠病毒的新变 Omicron 越来越关注的情况下，世界卫生组织正在寻求在各国之间达成项应对疫情的全球条约。

The WHO chief was speaking at the start of a three-day special session of the World Health Assembly on Monday amid growing concerns over the new Omicron coronavirus variant.

世卫组织负责人在周举行的为期三天的世界卫生大会特别会议始时表讲话，当时人们对新变 Omicron 的担忧越来越大。

Just 15% of people in the U.S. ages 5 and older have gotten a bivalent booster, according to the CDC, which means many people are currently not as protected as they could be against the new variant.

根据美国疾病控与预防中心的数据，在美国5岁及以上的人群中，只有15%的人接种了二价疫苗，这意味着许多人目前对这种新变的保护程度没有达到应有的水平。

New variants or strains of COVID-19 are appearing around the world, as it mutates like other viruses do and one big question being asked is, will existing vaccines protect people against the new versions of coronavirus?

全球范围内正在不断出现新冠病毒的新变或毒株，当它像其他病毒样变异时，个很严重的问题是，现有的疫苗能否保护人们免受新冠病毒的变种毒株的感染呢？

Today, we'll look at how new Omicron subvariants are already increasing cases and hospitalizations… Fischman: And we'll try to figure out if fall vaccine boosters should contain standard Omicron or some of those new subvariants instead.

今天，我们将看看新的 Omicron 亚变如何增加病例和住院率… … Fischman：我们将尝试弄清楚秋季疫苗助推器是否应该包含标准 Omicron 或其中些新的亚变。